Question about 2002 GMC Envoy

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Ac blower wheel vibrating on 2002 gmc envoy slt!

How hard is it to get the blower wheel out of the housing?it vibrates more as you turn up the speed. maybe the wheel is fine and just out of balance.do i need to adress this asap or can i run the fan on low? i dont have a problem taking it to gm dealer but if i can do it in a timely manner i will do it in my garage. im a service tech for industrial heating an airconditioning company so i understand mechanics, controls, wiring etc. if you could help that would be great.

dan
santee,ca

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If you remove the glove box, you can easily access the blower motor. The blower motor is held in by 3 bolts, 2 of the bolts are easy to get to, the third is a little more difficult. I had this same exact problem with mine and all I had to do was remove a bunch of leaves that got into it somehow, but I had all apart and back together within 2 hours, it may not have even been that long. Hope this helps ya.

Posted on Dec 30, 2008

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Posted on Jan 02, 2017

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AC Heater


It sound like the blower wheel of the blower motor is rubbing the inside of the housing (the smoke). Sounds like the blower wheel rubbing may have burned the inner plastic housing or has come off of the motor shaft inside. Take the blower motor and wheel back out and inspect everything closely I think you will find the problem.

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How to install a front blower motor in a 96 ford explorer


Blower Motor - REMOVAL & INSTALLATION
(see Figures 1 and 2)

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Fig. 1: Exploded view of the blower motor mounting

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Fig. 2: Exploded view of the blower motor and wheel (fan) assembly

Without Air Conditioning

  1. Disconnect the negative battery cable.
  2. Remove the air cleaner or air inlet duct, as necessary.
  3. If necessary, Remove the speed control module and the washer fluid reservoir.

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Fig. 3: To remove the blower motor, first disconnect the electrical wire harness plug...

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Fig. 4: ...then remove the blower motor cooling tube from the motor
  1. Disconnect the wire harness connector from the blower motor by pushing down on the connector tabs and pulling the connector off of the motor.
  2. Disconnect the blower motor cooling tube at the blower motor.
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Fig. 5: Remove the blower motor attaching screws and the washer fluid reservoir...

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Fig. 6: ...then slide the blower motor from the housing. Take care to not damage the blower wheel (arrow)
  1. Remove the 2 screws attaching the blower motor and wheel to the heater blower assembly.
  2. Holding the cooling tube aside, pull the blower motor and wheel from the heater blower assembly and remove it from the vehicle.
  3. Remove the blower wheel push-nut and/or clamp from the motor shaft and pull the blower wheel from the motor shaft.
To install:
  1. Install the blower wheel on the blower motor shaft.
  2. Install the hub clamp and/or push-nut.
  3. Holding the cooling tube aside, position the blower motor and wheel on the heater blower assembly and install the 2 attaching screws.
  4. Connect the blower motor cooling tube and the wire harness connector.
  5. Install the vacuum reservoir on the hoses with the 1 screws.
  6. If removed, install the speed control module and the washer fluid reservoir.
  7. Install the air cleaner or air inlet duct, as necessary.
  8. Connect the negative battery cable and check the system for proper operation.

With Air Conditioning
  1. Disconnect the negative battery cable.
  2. In the engine compartment, disconnect the wire harness from the motor by pushing down on the tab while pulling the connection off at the motor.
  3. Remove the air cleaner or air inlet duct, as necessary.
  4. If necessary, remove the solenoid box cover retaining bolts and the solenoid box cover.
  5. Disconnect the blower motor cooling tube from the blower motor.
  6. Remove the blower motor mounting plate attaching screws and remove the motor and wheel assembly from the evaporator assembly blower motor housing.
  7. Remove the blower motor hub clamp from the motor shaft and pull the blower wheel from the shaft.
To install:
  1. Install the blower motor wheel on the blower motor shaft and install a new hub clamp.
  2. Install a new motor mounting seal on the blower housing before installing the blower motor.
  3. Position the blower motor and wheel assembly in the blower housing and install the attaching screws.
  4. Connect the blower motor cooling tube.
  5. Connect the electrical wire harness hard shell connector to the blower motor by pushing into place.
  6. If removed, position the solenoid box cover into place and install the 2 retaining screws.
  7. Install the air cleaner or air inlet duct, as necessary.
  8. Connect the negative battery cable and check the blower motor in all speeds for proper operation.

Hope this help (remember comment and rated this).

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